<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Mail
 * @subpackage Protocol
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Plain.php 18951 2009-11-12 16:26:19Z alexander $
 */


/**
 * @see Zend_Mail_Protocol_Smtp
 */
require_once 'Zend/Mail/Protocol/Smtp.php';


/**
 * Performs PLAIN authentication
 *
 * @category   Zend
 * @package    Zend_Mail
 * @subpackage Protocol
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Mail_Protocol_Smtp_Auth_Plain extends Zend_Mail_Protocol_Smtp
{
	/**
	 * PLAIN username
	 *
	 * @var string
	 */
	protected $_username;


	/**
	 * PLAIN password
	 *
	 * @var string
	 */
	protected $_password;


	/**
	 * Constructor.
	 *
	 * @param  string $host   (Default: 127.0.0.1)
	 * @param  int    $port   (Default: null)
	 * @param  array  $config Auth-specific parameters
	 * @return void
	 */
	public function __construct($host = '127.0.0.1', $port = null, $config = null)
	{
		if (is_array($config)) {
			if (isset($config['username'])) {
				$this->_username = $config['username'];
			}
			if (isset($config['password'])) {
				$this->_password = $config['password'];
			}
		}

		parent::__construct($host, $port, $config);
	}


	/**
	 * Perform PLAIN authentication with supplied credentials
	 *
	 * @return void
	 */
	public function auth()
	{
		// Ensure AUTH has not already been initiated.
		parent::auth();

		$this->_send('AUTH PLAIN');
		$this->_expect(334);
		$this->_send(base64_encode(chr(0) . $this->_username . chr(0) . $this->_password));
		$this->_expect(235);
		$this->_auth = true;
	}
}
